CN1891566B - Power unit and a saddle-type ride vehicle having the same - Google Patents
Power unit and a saddle-type ride vehicle having the same Download PDFInfo
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- CN1891566B CN1891566B CN2006100984203A CN200610098420A CN1891566B CN 1891566 B CN1891566 B CN 1891566B CN 2006100984203 A CN2006100984203 A CN 2006100984203A CN 200610098420 A CN200610098420 A CN 200610098420A CN 1891566 B CN1891566 B CN 1891566B
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- virtual plane
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- 238000001816 cooling Methods 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 21
- 239000007858 starting material Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000004033 diameter control Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
- F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
- F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Arrangement Of Transmissions (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a power unit and a saddle riding type vehicle equipped with the power unit, capable of making vertical dimensions of an engine main body compact, and reducing loss horsepower. A cylinder body 823 is formed so as to make a virtual plane surface B' including a cylinder axis B and parallel with a crank axis P pass through a position deviated downward from the crank axis P. At least a part of an ECVT motor (a driving electric motor) 865 and a reciprocating gear (a driving member) 866 is disposed on the cylinder body 823 side of a virtual plane surface E including a crank case side end portion 823c of the cylinder body 823 and vertical to the cylinder axis B, and above a lower surface 823b of the cylinder body 823.
Description
Technical field
The present invention relates to power unit and the Straddle-type vehicle that is provided with this power unit, in this power unit, the change speed gear box that wherein holds V belt change-speed box engages integratedly with engine main body.
Background technology
For example, motor scooter is equipped with the unit oscillating power unit usually thereon, and in this unit oscillating power unit, engine main body engages integratedly with the change speed gear box that wherein holds stepless speed changing mechanism.
In some cases, this power unit comprises the cooling diameter control structure, wherein motor is used to control changeably based on engine speed, the speed of a motor vehicle etc. the band cooling diameter of primary pulley, with the running state cooresponding optimum transmission gear ratio (for example, see patent documentation 1) of acquisition with driving engine.
[patent documentation 1] patent specification No.3043061
Summary of the invention
Incidentally, above-mentioned traditional power unit relates to following problem: the layout and the structure that depend on drive member and motor, the vertical yardstick of engine main body becomes bigger, and wherein said drive member changes the cooling diameter of primary pulley, the described drive member of described motor-driven.
And this power unit need improve fuel oil consumption by reducing loss of horsepower.
The present invention has considered above-mentioned conventional situation, and its purpose is a kind of power unit is provided and the Straddle-type vehicle that is provided with this power unit, and this power unit can make engine main body compact and can reduce loss of horsepower on vertical yardstick.
The invention provides a kind of unit oscillating power unit, wherein change speed gear box and engine main body engage integratedly to be supported on the body shell and can swing, hold the stepless speed changing mechanism that has around the V band of drive side belt wheel and the winding of slave end belt wheel in the described change speed gear box, described engine main body has cylinder main body and bent axle, wherein the angle that forms between virtual plane that comprises driven side shaft and drive-side shaft and cylinder-bore axis is equal to or less than 45 degree, described power unit comprises drive member and drives uses motor, described drive member changes the cooling diameter of described drive side belt wheel, the described driving described drive member of motor-driven, and wherein said cylinder main body forms and makes the virtual plane comprise described cylinder-bore axis and to be parallel to crank axle through position that the described crank axle of associating offsets downward, and described driving is arranged on the crankcase side end and that side of virtual plane perpendicular to described cylinder-bore axis that comprises described cylinder main body with respect to described cylinder main body with at least a portion of motor and described drive member, and is arranged in more than the lower surface of described cylinder main body.
For power unit according to the present invention make the virtual plane comprise cylinder-bore axis and be parallel to crank axle through the position that the crank axle of associating offsets downward because cylinder main body forms, so cylinder main body be positioned at this side-play amount for lower position on.Therefore, can be so that the parts installing space of cylinder main body top becomes big and makes the vertical yardstick compactness of engine main body.
And cylinder offset acts on bearing capacity on the cylinder block thereby can reduce crank motion owing to piston, and realizes reducing of loss of horsepower accordingly, thereby can improve the fuel oil loss below crank axle.
In addition, drive member (it changes the cooling diameter of drive side belt wheel) and at least a portion that drives with motor (it drives described drive member) are arranged on the crankcase side end and that side of virtual plane perpendicular to cylinder-bore axis that comprises cylinder main body with respect to cylinder main body, and be arranged in more than the lower surface of cylinder main body, therefore can utilize the clearance spaces by cylinder offset is produced below crank axle of cylinder main body top to arrange drive member and drive and use motor, so can make the vertical yardstick compactness of whole power unit.
Description of drawings
Fig. 1 illustrates the lateral plan that is provided with according to the motor scooter of the power unit of the embodiment of the invention.
Fig. 2 is the birds-eye view that the semi-sictional view of power unit is shown.
Fig. 3 illustrates the lateral plan of power unit under the state that has removed case lid.
Fig. 4 is the right side view that the engine main body of power unit is shown.
Fig. 5 is the cutaway view that the stepless speed changing mechanism of power unit is shown.
Fig. 6 is the cutaway view that the actuating motor part of power unit is shown.
Fig. 7 illustrates the main balancing device of power unit and the cutaway view of oil pump driver element.
Fig. 8 is the cutaway view that the oil storage part of power unit is shown.
The specific embodiment
Below with reference to accompanying drawing embodiments of the invention are described.
Fig. 1 to 8 is that explanation is according to the power unit of the embodiment of the invention and the view that is provided with the Straddle-type vehicle of this power unit.To this embodiment be described according to the situation that is installed in the power unit on the motor scooter.In addition, relate in an embodiment forward and backward and left and rightly be illustrated in forward and backward and left and right under the state that is sitting on the vehicle seat.And the vertical direction that relates to is in an embodiment represented perpendicular to the ground-surface direction.
In the accompanying drawings, the motor scooter of label 801 expression with following schematic structure.Front fork 805 is pivotally mounted on the head pipe (not shown) of lower skeleton type body shell, and front fork 805 is arranged in its lower end with front-wheel 806, and with bogie car 807 end disposed thereon places.And, be used for the middle part that double saddle-type vehicle seat 808 is installed in body shell.Vehicle seat 808 belows that unit oscillating power unit 810 is installed in body shell are with can vertical oscillation, and trailing wheel 811 is arranged on the rear end of power unit 810.
The circumference of front fork 805 is covered by preceding capping 809a, and the circumference of the bottom of vehicle seat 808 is covered by side seal lid 809b.Capping 809a and side seal covered between the 809b before left and right stepped plate 809c, 809c were arranged in.
Engine main body 820 is water-cooled four-cycle singlecylinderengines, it is configured to the preceding mating surfaces of following part bonding to the crankcase 822 that wherein holds bent axle 821: have the cylinder block 823 of the piston 826 that is slidably received within wherein, and wherein be furnished with light-up plug 828, air inlet and exhaust valve, be used for opening and closing drivingly the cylinder head 824 of each camshaft (not shown); And cylinder head cover 825 is installed to cylinder head 824.
A pair of left and right pivot (support section) 822m, 822m are formed on the crankcase 822 forward and highlightedly.Left and right pivot 822m is supported on by transom 813a on the driving engine suspension 813 of above-mentioned body shell with can vertical oscillation.
Left and right pivot 822m is formed on the front wall section of oil storage part 822c of the crankcase 822 that will be described below and extends to be basically parallel to cylinder-bore axis B.And left and right pivot 822m is arranged under the lower surface of cylinder block 823, and in the front lower place that when the direction of bent axle is observed, is arranged in bent axle 821.
The air inlet pipe 827 that is communicated with the air inlet port is connected to the upper wall portion of cylinder head 824, and air inlet pipe 827 extends from the upper wall portion bending and towards vehicle rear.Fuel injector 827a is installed to the downstream end of air inlet pipe 827, and throttle gate 827b trip disposed thereon is distolateral.The airfilter (not shown) is connected to the upstream extremity of air inlet pipe 827.
Bent axle 821 is arranged as with its crank axle P and is directed to level on vehicle-width direction, and piston 826 is connected to bent axle 821 by connecting rod 829.
Left and right necked part 821b, the 821c of bent axle 821 supports by the bearing on left and right sidewall 822a, the 822b of crankcase 822 830,830.Containment member 831 is installed between left necked part 821b and the left side wall 822a, thereby crankcase 822 that is filled with lubricating oil and the change speed gear box 818 that the wind that travels can be incorporated into are wherein isolated mutually.
Form from the outside outstanding right driving axle 821d of right side wall 822b and the necked part 821c of bent axle 821.
As mentioned above, be projected into left driving shaft 814a the change speed gear box 818 and the left necked part 821b of bent axle 821 forms from left side wall 822a.Drive side belt wheel 814 is installed on the axle drive shaft 814a.
The main balancing device 835 that is used for suppressing the vibration that caused by main force of inertia is arranged in crankcase 822 with parallel with bent axle 821.Being formed on the main balancing device 835 is balance weight 835a, and it extends between the left and right crank arm 821a that is positioned at bent axle 821.
Be installed in the inboard of the right necked part 821c of bent axle 821 with balancing device gear 835b ingear driven wheel 837.
And timing chain driven wheel 821e is formed on the outside of right necked part 821c.Driven wheel 821e is connected to the camshaft (not shown) by timing chain 838.
The pump shaft 839a that is used for cooling water expansion tank coaxially is connected to balancing device 835.Pump shaft 839a is the cooling water pump 839 of drive arrangement on the outer wall of capping 833 rotatably.The cooling water expansion tank that the water pump 839 that is cooled pressurizes is provided to each cooling-water chamber (not shown) of engine main body 820.
Being arranged on the oil storage part 822c is oil pump 840, and it is fed to lubricating oil such as the bearing portions of bent axle 821, camshaft and each the lubricated part the slipper.Oil pump 840 comprises housing 841, pump shaft 842 and pump gear 843, housing 841 comprises the inhalation port 841a and the discharge port 841b in the right side wall 822b outside that is arranged in crankcase 822, pump shaft 842 is supported by housing 841 and right side wall 822b axle journal, and pump gear 843 is fixed to the outer end of pump shaft 842.
The suction passage 822e that is communicated with inhalation port 841a is formed on the right side wall 822b, and suction passage 822e opening is the basal surface near oil storage part 822c.In addition, label 844 expression oil drain plugs.
And the discharge-channel 822f that is communicated with discharge port 841b is formed on the right side wall 822b, and discharge-channel 822f is communicated with oil rectifier 845.Pressurizeed by oil pump 840 and split into bent axle path 822h and camshaft path 822i being fed to each lubricated part from service duct 822g, and then nature falls after rise to turn back to oil storage part 822c by the lubricating oil of oil rectifier 845 filterings.
The driven wheel 850a of actuating motor 850 (starting motor) is connected to starter toothed wheel 848 by idler shaft 849.Idler shaft 849 is supported for cross-over connection right side wall 822b and capping 833, and comprise with the big idle pulley 849a of driven wheel 850a ingear and with starter toothed wheel 848 ingear smaller idler wheel 849b.
The rotation of actuating motor 850 is delivered to starter toothed wheel 848 via idler shaft 849, and is delivered to bent axle 821 from starter toothed wheel 848 via rotor 832a.
Actuating motor 850 is arranged on the bottom, rear surface of crankcase 822, and its electrical axis is directed to parallel with bent axle 821.More specifically, actuating motor 850 is arranged in and holds among the recess 822n and covered by motor capping 850b, holds on the rear wall section of oil storage part 822c that recess 822n is arranged on crankcase 822 recessedly.
Change speed gear box 818 comprises casing 818a and case lid 819, and casing 818a is formed integrally as with the left side wall 822a of crankcase 822 continuity and extends to trailing wheel 811, and case lid 819 is removably mounted on the left mating surfaces of casing 818a.Cooling air is introduced the capping (not shown) and is installed to the outside of case lid 819 with the wind introducing change speed gear box 818 that will travel.
Drive side belt wheel 814 comprises collar member 853, mobile belt wheel 854 and fixed pulley 856, collar member 853 keyways are assembled to axle drive shaft 814a and go up with therewith rotation, mobile belt wheel 854 is installed on the collar member 853 with axially movable and with collar member 853 rotations, and fixed pulley 856 is installed in axle drive shaft 814a and goes up with against the left end surface of collar member 853 and fixing with axially not removable by retaining nut 855.
Slave end belt wheel 815 comprises fixed pulley 857, mobile belt wheel 858 and centrifugal clutch 859, fixed pulley 857 rotatably and axially immovably is installed on the driven shaft 815a, driven shaft 815a axle journal cross-over connection casing 818a and case lid 819, mobile belt wheel 858 is installed on the fixed pulley 857 with axially movable and with fixed pulley 857 rotations, and centrifugal clutch 859 places between fixed pulley 857 and the driven shaft 815a.When slave end belt wheel 815 rotating speeds increased, centrifugal clutch 859 was delivered to driven shaft 815a with the rotation of slave end belt wheel 815.The rotation of driven shaft 815a is delivered to the trailing wheel 811 that is installed on the axle drive shaft 861 via the main shaft 860 and the axle drive shaft 861 that are arranged in parallel with driven shaft 815a.
Stepless speed changing mechanism 817 comprises that cooling diameter changes mechanism 864, it changes the band cooling diameter of drive side belt wheel 814 based on engine speed, the speed of a motor vehicle etc., and cooling diameter changes front end place that mechanism 864 is arranged in change speed gear box 818 and is inclined upwardly and expands among the cooling diameter control cabin 864a that forms.
Cooling diameter changes mechanism 864 and is constructed to rotation with ECVT motor (drive and use motor) 865 and is delivered to as the reciprocating gear 866 of toothed chain and drive member with the moving axially of the mobile belt wheel 854 that reciprocating gear 866 is converted to drive side belt wheel 814, thereby also changeably the band cooling diameter of drive side belt wheel 814 is controlled between a low level and the high position automatically.Control the rotation of ECVT motor 865 by the controller (not shown) based on engine speed, the speed of a motor vehicle etc.
Cooling diameter changes mechanism 864 and comprises ECVT motor 865, rotation transmission gear parts 867 and move axially conversion portion 868, rotation is transmitted gear parts 867 rotation of ECVT motor 865 is delivered to reciprocating gear 866, moves axially conversion portion 868 rotation of reciprocating gear 866 is converted to moving axially of mobile belt wheel 854.
From the lateral observation of vehicle, ECVT motor 865 is extended between the upper surface and air inlet pipe 827 that the 822a ' of portion covered and be arranged in crankcase 822.
Rotation is transmitted gear parts 867 and is comprised reciprocating gear 866, motor side gear 869 and reducing gear 870, motor side gear 869 and reciprocating gear 866 engagements, reducing gear 870 reduces the rotating speed of ECVT motor 865 and this rotation is delivered to motor side gear 869, and the swing pinion 865a of ECVT motor 865 and reducing gear 870 engagements.Here, label 871 is represented rotary frequency sensors, thereby is also detected the position that moves axially of mobile belt wheel 854 by the slew mode of rotary frequency sensor 871 detection ECVT motors 865.
Move axially conversion portion 868 and comprise sliding cylinder body 872, mobile side feeding screw member 874 and fixation side feeding screw member 875, sliding cylinder body 872 is installed on the mobile belt wheel 854, mobile side feeding screw member 874 is rotatably supported by sliding cylinder body 872 by bearing 873 and reciprocating gear 866 is fixed to the upper, fixation side feeding screw member 875 and mobile side feeding screw member 874 engagements, and snap on the left wall 822a.
Fixation side feeding screw member 875 is supported by the fixation side load-carrying element 876 of tightening and be fixed to left wall 822a.Center bearing pilot bearing 877 places between fixation side load-carrying element 876 and the bearings member 878, and wherein bearings member 878 is fixed to axle drive shaft 814a.
When engine speed increased along with the accelerator opening operation, the rotation of ECVT motor 865 was controlled to cause predetermined band cooling diameter according to engine speed etc.The rotation of the swing pinion 865a of ECVT motor 865 is delivered to reciprocating gear 866 from reducing gear 870 and motor side gear 869.When reciprocating gear 866 rotations, mobile side feeding screw member 874 moves axially one section cooresponding distance of the rotation amount with ECVT motor 865 with reciprocating gear 866.With this, mobile belt wheel 854 is towards high-order side shifting scheduled volume, and drive side belt wheel 814 obtains the band cooling diameter that sets thus.
When the direction of bent axle is observed, the cylinder block 823 of power unit 810, cylinder head 824 and cylinder head cover 825 arranged offset, make the virtual plane B ' comprise cylinder-bore axis B and to be parallel to crank axle P offset downward the position of t (particularly, for about 5 to 7mm) through the crank axle P that associates.
The part of the cooling diameter of the change drive side belt wheel 814 of reciprocating gear 866, and the main portion of the driving reciprocating gear 866 of ECVT motor 865 is arranged on that side of virtual plane E with respect to cylinder block 823 and is arranged in more than the lower surface of cylinder block 823 when vertically observing, and wherein virtual plane E comprises the crankcase side end 823c of cylinder block 823 and perpendicular to cylinder-bore axis B.In other words, cooling diameter change mechanism 864 and ECVT motor 865 are arranged in cylinder-bore axis B top.
And ECVT motor 865 is arranged in the top of the upper surface 823a of cylinder block 823.More specifically, ECVT motor 865 is arranged in the recess on the cylinder block mating surfaces part that is formed at crankcase 822, and by the extension of crankcase 822 822a ' covering.
From when the direction of bent axle is observed, main balancing device 815 is arranged in respect to cylinder block 823 and comprises on crank axle P and the opposite side perpendicular to the virtual plane C of cylinder-bore axis B, and is arranged in bent axle 821 tops.
When from when the direction of bent axle is observed, the rotation axis of the driven wheel 850a of actuating motor 850 is arranged in respect to cylinder block 823 and comprises on crank axle P and the opposite side perpendicular to the virtual plane C of cylinder-bore axis B, and is arranged in bent axle 821 belows.
And the above and below that ECVT motor 865 and actuating motor 850 are arranged in virtual plane D (it comprises the axis of oscillation P1 of crank axle P and pivot 822m) is with respect to virtual plane D symmetry.
The pivot of power unit 810 (strut member) 822m is arranged on that side of virtual plane E with respect to cylinder block, and from being arranged in below the lower surface 823b of cylinder block 823 when the direction of bent axle is observed, wherein virtual plane E comprises the crankcase side end 823c of cylinder block 823 and perpendicular to cylinder-bore axis B.In addition, pivot 822m is arranged in the below of the virtual plane B ' that comprises cylinder-bore axis B and be parallel to crank axle P.
According to this embodiment, because cylinder block 823, cylinder head 824 and cylinder head cover 825 arranged offset, make the virtual plane B ' comprise cylinder-bore axis B and to be parallel to crank axle P offset downward the position of t, so cylinder block 823 grades are positioned at the following t of crank axle P place through the crank axle P that associates.Therefore, can be so that the above parts installing space of the upper surface 823a of cylinder block 823 become big, and make the vertical yardstick compactness of engine main body 820.
And cylinder-bore axis B is arranged offset below crank axle P, acts on bearing capacity on the cylinder-bore thereby can reduce crank motion owing to piston 826, and realizes reducing of loss of horsepower accordingly, thereby can improve the fuel oil loss.
According to this embodiment, because the main portion of the part of reciprocating gear 866 and ECVT motor 865 is arranged on that side of virtual plane E (its comprise the crankcase side end 823c of cylinder block 823 and perpendicular to cylinder-bore axis B) with respect to cylinder block 823 and is arranged in more than the lower surface of cylinder block 823, so can utilize the clearance spaces that produces by arranged offset of cylinder block 823 tops to arrange that cooling diameter changes mechanism 864 and ECVT motor 865, and make the vertical yardstick compactness of power unit 810.
According to this embodiment, because ECVT motor 865 is arranged on the cylinder block mating surfaces part of the upper surface 823a of cylinder block 823 and crankcase 822, so can utilize the clearance spaces by the arranged offset generation of cylinder block 823 tops to arrange ECVT motor 865, and avoid because the power unit 810 that the installation of cooling diameter change mechanism 864 causes is excessive.
According to this embodiment, because when from the time along the observation of the direction of bent axle, the main balancing device 835 that is used to suppress the vibration that caused by main force of inertia is arranged in respect to cylinder block and comprises crank axle P and perpendicular on the opposite side of the virtual plane C of cylinder-bore axis B and be arranged in the below of bent axle 821, so changing mechanism 864 (C is clipped between the two with virtual plane) with respect to cooling diameter, main balancing device 815 is positioned on the opposite side, therefore comparatively favourable in the place ahead and the balance weight on the rear of bent axle 821.
According to this embodiment, because when from the time along the observation of the direction of bent axle, actuating motor 850 is arranged in respect to cylinder block 823 and comprises on crank axle P and the opposite side perpendicular to the virtual plane C of cylinder-bore axis B, and be arranged in bent axle 821 belows, be positioned on the opposite side so actuating motor 850 changes mechanism 864 (C is clipped between the two with virtual plane) with respect to cooling diameter, and the balance weight on the above and below of bent axle 821 is comparatively favourable.
According to this embodiment, because when from the time along the observation of the direction of bent axle, the left and right pivot 822m of power unit 810 is arranged on the crankcase side end 823c and that side of virtual plane E perpendicular to cylinder-bore axis B that comprises cylinder block 823 with respect to cylinder block 823, and be arranged in below the lower surface 823b of cylinder block 823, so the pivot 822m as strut member can be positioned near on the position of cylinder block 823 to the vertical oscillation of power unit 810, and can improve the rigidity that power unit 810 is supported.
And, owing to pivot 822m is arranged in below the lower surface of cylinder block 823, so can further make the parts installing space of cylinder block more than 823 become big.
In addition, though described embodiment for the driving engine with turn forward cylinder or horizontal air cylinder (its cylinder-bore axis B is with respect to virtual plane A ' formation 45 degree or the littler angles that comprise the straight line A that is connected between axle drive shaft 814a and the driven shaft 815a), the present invention can be applicable to cylinder-bore axis B and forms 45 degree or the situation of wide-angle more.In the case, cylinder block 823 arranged offset make virtual plane B ' process comprise cylinder-bore axis B towards a side (for example, from along the direction observation of bent axle the time, the front side of crank axle P) out-of-position position.Pivot (strut member) 822m is formed on the crankcase side end 823c and that side of virtual plane E perpendicular to cylinder-bore axis B that comprises cylinder block 823 with respect to cylinder block, and is formed on the opposite side (B is clipped between the two with cylinder-bore axis) of crank axle P.
And though described present embodiment with respect to the power unit of motor scooter, power unit of the present invention is not limited to small-sized a kind of, and can be applicable to other motor bikes.And " motor bike " mentioned in the application's specification sheets expression comprises the bicycle (Electrical Bicycle) with main primary mover and the motor bike of scooter, and represents the vehicle that can turn in body inclination particularly.Therefore, even can be included in " motor bike " mentioned in the application's the specification sheets according to three-wheel vehicle, the four-wheeled (or more) (wherein one of front-wheel and trailing wheel comprise two or more wheels) of tire quantity.Cross-country car) and oversnow so-called Straddle-type vehicle in addition, the invention is not restricted to motor bike, and can be applicable to effectively to utilize other vehicles of the present invention, for example, except motor bike, comprise four-wheel light roadster (ATV:.
Claims (7)
1. unit oscillating power unit, wherein change speed gear box and engine main body engage integratedly to be supported on the body shell and can swing, hold the stepless speed changing mechanism that has around the V band of drive side belt wheel and the winding of slave end belt wheel in the described change speed gear box, described engine main body has cylinder main body and bent axle, wherein the angle that forms between virtual plane that comprises driven side shaft and drive-side shaft and cylinder-bore axis is equal to or less than 45 degree
Described power unit comprises drive member and drives uses motor, and described drive member changes the cooling diameter of described drive side belt wheel, the described driving described drive member of motor-driven, and
Wherein said cylinder main body forms and makes the virtual plane comprise described cylinder-bore axis and to be parallel to crank axle pass the position that offsets downward from described crank axle, and
Described driving is arranged in described cylinder main body one side with at least a portion of motor and described drive member with respect to following virtual plane, and be arranged in the top of the lower surface of described cylinder main body, described virtual plane comprise described cylinder main body crank case one side the end and perpendicular to described cylinder-bore axis.
2. power unit as claimed in claim 1, wherein said driving is positioned at more than the upper surface of described engine main body with at least a portion of motor.
3. power unit as claimed in claim 1, at least a portion of wherein said drive member is positioned at the side of described cylinder main body.
4. power unit as claimed in claim 1, also comprise main balancing device, the vibration that its inhibition is caused by main force of inertia, and wherein when from when the direction of described bent axle is observed, described main balancing device is arranged in respect to described cylinder main body and comprises on described crank axle and the opposite side perpendicular to the virtual plane of described cylinder-bore axis.
5. power unit as claimed in claim 1, also comprise the starting motor, it rotatably drives described bent axle, and wherein when from when the direction of described bent axle is observed, described starting is arranged in respect to described cylinder main body with the rotation axis of motor and comprises on described crank axle and the opposite side perpendicular to the virtual plane of described cylinder-bore axis.
6. power unit as claimed in claim 1, wherein when from when the direction of described bent axle is observed, described power unit supports described power unit so that can be arranged in described cylinder main body one side with respect to following virtual plane with respect to the support section of described body shell swing, and be arranged in the below of the lower surface of described cylinder main body, described virtual plane comprise described cylinder main body bent axle one side the end and perpendicular to described cylinder-bore axis.
7. Straddle-type vehicle comprises body shell and as each described power unit in the claim 1 to 6, described power unit be installed in make on the described body shell cylinder-bore axis be directed at described vehicle vertically on.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005194749 | 2005-07-04 | ||
| JP2005194749A JP4530926B2 (en) | 2005-07-04 | 2005-07-04 | Power unit and straddle-type vehicle equipped with the power unit |
| JP2005-194749 | 2005-07-04 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100950333A Division CN101293549A (en) | 2005-07-04 | 2006-07-04 | Unit swing type power unit for a vehicle and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1891566A CN1891566A (en) | 2007-01-10 |
| CN1891566B true CN1891566B (en) | 2010-05-26 |
Family
ID=37067431
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100950333A Pending CN101293549A (en) | 2005-07-04 | 2006-07-04 | Unit swing type power unit for a vehicle and vehicle |
| CN2006100984203A Active CN1891566B (en) | 2005-07-04 | 2006-07-04 | Power unit and a saddle-type ride vehicle having the same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100950333A Pending CN101293549A (en) | 2005-07-04 | 2006-07-04 | Unit swing type power unit for a vehicle and vehicle |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8038557B2 (en) |
| EP (1) | EP1741897B1 (en) |
| JP (1) | JP4530926B2 (en) |
| CN (2) | CN101293549A (en) |
| ES (1) | ES2535684T3 (en) |
| TW (1) | TWI306927B (en) |
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| JP4767603B2 (en) * | 2005-07-04 | 2011-09-07 | ヤマハ発動機株式会社 | Power unit and straddle-type vehicle equipped with the power unit |
| JP2008202628A (en) * | 2007-02-16 | 2008-09-04 | Yamaha Motor Co Ltd | Transmission and engine unit equipped with the same |
| US8317653B2 (en) * | 2007-08-20 | 2012-11-27 | Yamaha Hatsudoki Kabushiki Kaisha | Engine unit and straddle-type vehicle |
| JP5356087B2 (en) * | 2009-03-27 | 2013-12-04 | 本田技研工業株式会社 | Electric vehicle |
| CN102102742A (en) * | 2009-12-16 | 2011-06-22 | 财团法人工业技术研究院 | Hydraulic control dry-type belt stepless variable speed mechanism |
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| US8534413B2 (en) | 2011-10-14 | 2013-09-17 | Polaris Industries Inc. | Primary clutch electronic CVT |
| US9103428B2 (en) * | 2013-03-15 | 2015-08-11 | Kawasaki Jukogyo Kabushiki Kaisha | Structure for coupling V-belt type continuously variable transmission with engine |
| EP2837850A1 (en) | 2013-07-05 | 2015-02-18 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Belt type continuously variable transmission device |
| US20150133247A1 (en) * | 2013-11-13 | 2015-05-14 | Shawn Watling | Snow mobile drive assembly |
| ES2782130T3 (en) * | 2014-08-01 | 2020-09-10 | Piaggio & C Spa | Permanent magnet electric motor and generator and hybrid motor comprising the same in a scooter |
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| CN105691540B (en) * | 2016-01-19 | 2018-05-29 | 重庆精通力阳摩托车制造有限责任公司 | A kind of motorcycle engine assembly |
| EP3412932B1 (en) * | 2016-02-04 | 2020-06-10 | Yamaha Hatsudoki Kabushiki Kaisha | Engine unit |
| US9863523B2 (en) * | 2016-03-21 | 2018-01-09 | Textron Innovations Inc. | Continuously variable transmission |
| CA3094169C (en) | 2018-03-19 | 2023-02-28 | Polaris Industries Inc. | Continuously variable transmission |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1741897B1 (en) | 2015-04-15 |
| EP1741897A3 (en) | 2010-02-24 |
| CN101293549A (en) | 2008-10-29 |
| TWI306927B (en) | 2009-03-01 |
| TW200714824A (en) | 2007-04-16 |
| JP4530926B2 (en) | 2010-08-25 |
| US20070026982A1 (en) | 2007-02-01 |
| US8038557B2 (en) | 2011-10-18 |
| ES2535684T3 (en) | 2015-05-13 |
| EP1741897A2 (en) | 2007-01-10 |
| CN1891566A (en) | 2007-01-10 |
| JP2007008405A (en) | 2007-01-18 |
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